212913981

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{281}}^1$

素因数の和:527

約数の個数: 64

約数和(自身を含む): 382617600

約数和(自身を除く): 169703619

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 211, 281, 399, 513, 633, 843, 1197, 1477, 1899, 1967, 2529, 3591, 4009, 4431, 5339, 5697, 5901, 7587, 12027, 13293, 16017, 17703, 28063, 36081, 37373, 39879, 48051, 53109, 59291, 84189, 108243, 112119, 144153, 177873, 252567, 336357, 415037, 533619, 757701, 1009071, 1126529, 1245111, 1600857, 3379587, 3735333, 7885703, 10138761, 11205999, 23657109, 30416283, 70971327, 212913981]

約数ペア:

[(1, 212913981), (3, 70971327), (7, 30416283), (9, 23657109), (19, 11205999), (21, 10138761), (27, 7885703), (57, 3735333), (63, 3379587), (133, 1600857), (171, 1245111), (189, 1126529), (211, 1009071), (281, 757701), (399, 533619), (513, 415037), (633, 336357), (843, 252567), (1197, 177873), (1477, 144153), (1899, 112119), (1967, 108243), (2529, 84189), (3591, 59291), (4009, 53109), (4431, 48051), (5339, 39879), (5697, 37373), (5901, 36081), (7587, 28063), (12027, 17703), (13293, 16017)]